78485566 has 8 divisors (see below), whose sum is σ = 124653600. Its totient is φ = 36934368.

The previous prime is 78485557. The next prime is 78485567. The reversal of 78485566 is 66558487.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78485567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154166 + ... + 1154233.

It is an arithmetic number, because the mean of its divisors is an integer number (15581700).

Almost surely, 2^78485566 is an apocalyptic number.

78485566 is a deficient number, since it is larger than the sum of its proper divisors (46168034).

78485566 is a wasteful number, since it uses less digits than its factorization.

78485566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308418.

The product of its digits is 1612800, while the sum is 49.

The square root of 78485566 is about 8859.2079781434. The cubic root of 78485566 is about 428.1506406296.

The spelling of 78485566 in words is "seventy-eight million, four hundred eighty-five thousand, five hundred sixty-six".